Improvement in reciprocating winnowers



H. KELLER. Reciprocating'\|l\lin|1uwer.s.y

.No.155,241.` Patentedsept.22,1a74.

l l I (n ATTORNEYS.

"FE GRAPHIC comHoro-wmss a+: mit( PLAcsmX.

UNITED STATES PATENT OFFICE.

HENRY KELLER, OF SAUK CENTRE, MINNESOTA.

IMPROVEMENT IN RECIPROCATING WINNOWERS.

Specification forming part of Letters Patent No. l 55,241, datedSeptember 22, 1874 application filed July 11, 1874.

To all whom it may concern Be it known that I, HENRY KELLER, of SaukCentre, in the county of Stearns and State of Minnesota, have invented anew and useful Improvement in Reciprocating Winnowers, of which thefollowing is a specifica` tion:

In the accompanying drawing, Figure l represents a vertical longitudinalsection of my improved reciprocating winnower or grainfanning mill,taken on the the line c c, Fig. 2; and Fig. 2, a horizontal section andplan view of the same on the line :t Fig. l.

Similar letters of reference indicate corresponding parts.

My invention 'relates to improvements in the reciprocating winnower orfanning-mill patented to me under date of June 24, 1873, and numbered140,201, by which the grain may be separated as to lineness anddelivered directly to suitable measures, and also the whole millstif'ened and braced in a more perfect manner. My invention consistsmainly in the arrangement of spouts supported in the frame below thefan-box for delivering the winnowed grain in connection with the lowerseparating-screens supported in the shoe, and provided withspout-connecting guide-strips.

In the drawing, A A represent the upper, B B the lower,grading-screens,which are fitted into grooves of the sides C andreciprocated by suitable gearing in connection with the shaft of the fanD. The grain is introduced through the hopper E and conveyed to theseries of upper screens, and thence to the lower screens in such amanner that the wind from the fan acts with such powerful effect on thegrain that the oats and other light matter are separated by passingthrough the upper sections, and the screenings at the intermediate spacebetween the upper and lower screens. The screenings drop onto thesliding box or case E extending at the base of the mill below and alongthe full length of the screens, being readily taken off therefrom. Thelower screens B are of different grades, the upper being wider than thelower, and are connected at their lower edges with inclinedlateral'brace-sheets F, which strengthen the front part of the millbelow the farmingboX and take up the grain from the screens B,conveyingit by curved guide-strips F1, forming spouts sidewise of eachother to half-bushel or other measures placed below the same. Thescreens B are also provided with side guidestrips F2, which form theextension of the corresponding strips of the inclined spouts, and securethe delivery of the grain to the respective screen-connecting spouts.

The grain is thus continuously and steadily separated from the chaff,assorted as to fineness, and fed to the receiving-measures, and therebythe usefulness and practicability of the fanning-mill considerablyenhanced.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl As an improvement in reciprocating Winnowers, thecombination of the lower differently-graded screens or sieves B,provided with spout-connecting guidestrips F2, and

supported in the reciprocating shoe, with the lateral inclinedgrain-delivering spouts F F1, supported upon the frame,'and arrangedsubstantiall y as and for the purpose set forth.

HENRY KELLER.

Witnesses A. BAR'ro, N. H. MINER.

